Q POWER Dual 10 in. Vented Port Subwoofer Sub Box Enclosure (2-Pack) 2 x QBASS10 - The Home Depot
Dual 12 Inch Car Audio Vented Sub Box Ported Stereo Subwoofer Speaker Enclosure - Walmart.com
Amazon.com: Pyle 6" Dual Subwoofer Box System - Dual Series Vented Subwoofer Enclosure - Rear Vented Design with Built-in Illuminating LED Lights, 2 x 200 Watts Max Power, Two 4” Tweeters : Electronics
Down4sound PRO-FAB HD3 2 12 | 2 12 Sub Box | Dual HD 12-Inch KERF Port Subwoofer Enclosure Box - Down4Sound Shop
Amazon.com: Pyle 6" Dual Subwoofer Box System - Dual Series Vented Subwoofer Enclosure - Rear Vented Design with Built-in Illuminating LED Lights, 2 x 200 Watts Max Power, Two 4” Tweeters : Electronics